JP2016508194A - Method for manufacturing an automotive door latch with pawls arranged in an oblique state - Google Patents

Abstract

Locking parts (30, 31), ie both locking parts during the manufacturing process in order to minimize sliding friction between the rotating latch (2) and the pawl (5) of the car door lock (1) On the different latch surfaces (12, 13) of (30, 31), a stamped outline (14) having a linear groove and a fixed stamped outline (11) are provided. 18 ', 19') is characterized by being diagonal. The grooves (18 ′, 19 ′) that are oblique with respect to the latch surface (13) on the claw portion (5) are formed in the case housing for locking when the whole claw portion (5) or the rotation latch (2) is oblique. The lock case housing (40) can be generated in several ways. Between the straight groove (17) and the oblique groove (18 ', 19'), at least two coatings are provided, which are such that both locks (30, 31) are in contact with each other and friction is reduced. Make sure to reduce. [Selection] Figure 2

Description

Description

  The present invention relates to a method for manufacturing a locking mechanism part, a catch part and a claw part, wherein the catch part and the claw part are stamped and provided with a corresponding ratchet surface on the catch part and the claw part. A vertical edge is provided and then covered with a coating except for the latch surface. The present invention also relates to an automotive door latch comprising a catch portion and a claw portion that holds the catch portion in a closed state, wherein the catch portion and the claw portion correspond to a vertical edge created during stamping. A latch surface and a coating that is not applied to the latch surface.

  The squeak noise generated between the hanger arm and the catch part and generated during the operation of the car can be reduced by the hanger arm or catch part provided with a surface structure in the contact area responsible for reducing sliding friction It is known. In the prior art disclosed in DE 10 2010 009 141 A1, the hanger arm is provided with grooves or respective webs in a contact area which runs obliquely with respect to the longitudinal axis of the hanger arm. These aim to reduce the squeaking noise. However, the different solutions disclosed in DE 10 2010 009 141 A1 are not considered during the actual production of the hanger arm, in particular during the production of the locking parts, catches and claws, so that a surface that is favorable to squeak noise. Is present on the corresponding latch surface. During stamping, channels and grooves are created in the edge surface, which can engage each other, especially when the pawl is pivoted away, causing the noise.

  It is an object of the present invention to provide a manufacturing method and a vehicle door latch in which the influence of sticking / slip is hardly negligible or does not occur at all during the movement of the catch part and the claw part with respect to each other.

  The present invention further includes a catch portion having a linear stamp outer shape disposed on a base of a lock case housing and a catch surface disposed in parallel to the base, and the claw portion is further locked by being twisted at a constant angle. This problem is solved by being connected to the base of the case housing.

  As part of such a manufacturing method, the claw portion can be installed such that when the claw portion is pivoted away, the channels or grooves generated on the catch portion and the edge surface of the claw portion cannot engage. Instead, the components, i.e. catches and pawls, slide against each other with reduced sliding friction, so that the noise generated is reduced considerably or not at all. The two latch surfaces that rub against each other are no longer in full contact, but merely contact at a fixed point, where the straight groove of the catch portion and the oblique groove of the claw portion are mutually connected, i.e. They are touching where they overlap. Therefore, the present invention has a double effect (ie, the straight grooves on both components created during manufacture are no longer engaged because of the diagonal position of the catch, the two grooves are constant Since only contact is allowed at the point, sliding friction is also reduced).

  An advantageous further development of the invention provides that the pawl is pivotably mounted to the base of the locking case housing at an offset of 5-8 °, such an angle of 5-8 °. Applies to a claw part having a thickness of about 4 mm and a gap between the catching part including the groove and the claw part in a stamping outer shape of 0.15 to 0.30 mm. For larger spacings and / or other gaps, the calculated angle is different, but in any case falls within the range of 5-15 °. The advantage is that such an angle is easily achieved by the solution presented by the present invention, i.e. the diagonal placement of the claw.

  In order to provide an offset arrangement of the pawls without having too much effort, the present invention defines a base for the locking case housing that includes a seat for the pawls formed diagonally on the base. Conveniently, the same securing means can be used and only minor changes have to be made with respect to the locking case housing, but it is said that the pawl can be placed on the base by an offset angle. It is.

  In another option for providing the intended pawl arrangement, the pawl seat is connected to the base of the locking case housing and uses the conventional fastening of the pawl with a seat that includes an oblique contact area. This is accomplished during the manufacture of the locking case housing, with each deformation occurring at the same time to achieve the desired seat for the pawl (ie, for example, an oblique seat that is pushed out of the base).

  In other options for positioning the claw as desired in the locking case housing at an angle, the claw is diagonally surrounded by a plastic coating and is placed flat on the base of the locking case housing. Connected. Plastic is necessary for the coating, in which case it is simply applied as a special coating in order to achieve an oblique placement of the nails. That is, the coating allows the claw portions to be obliquely arranged inside the lock case housing.

  A diagonal arrangement in the coating is particularly advantageous and is easily achieved if the coating is a rectangular plastic body, where the claw is on the latch surface with respect to the linear stamping profile of the catch portion latch surface. The stamped outer shape is offset and held at an angle necessary for the diagonal arrangement. The flat surface of the coating is easy to place and is fixed to the locking case housing at the desired angle that is always provided when specified by the placement of the claw in the coating, so that the specific surface of such a claw Diagonal placement also provides advantages for installation.

  In a further advantageous embodiment, the catch portion seat or pawl and the catch portion seat are connected to the base of the locking case housing such that they are offset from each other. In this arrangement, the claw rather than the catch is arranged obliquely in the lock case housing, and the same effect is achieved in the above solution. However, it is possible to place the catch part and the claw part by offsetting them inside the locking case housing, and the offset arrangement can reduce the oblique angles of the two locking mechanism parts, respectively. is there.

  This arrangement solves the problem by the catch part being arranged on the base of the locking case housing with the latch surface extending parallel to the base, and the claw part being rotated at a specific angle, both locking mechanisms The engagement of the stamping profile of the part is prevented, and the part is connected to the base of the case housing for locking. As a result of the offset connection or diagonal placement of the pawls on the base of the locking case housing, the grooves and channels on the latching surfaces of both locking mechanism parts no longer engage each other, or generally engage, and are unnecessary. Noise is already prevented. Furthermore, since the two locking mechanism parts can only contact in the area where the straight and diagonal channels and grooves overlap, ensuring the diagonal placement of the pawls is the locking mechanism parts, ie the catch part and the pawls. The part is in contact at a certain point. Since the two locking mechanism parts only contact at a certain point of contact on the latch surface, this advantageous dual effect results in minimal wear on the automotive door latch as well.

  Conveniently, the pawl is offset by 5-8 ° and placed on the base of the locking case housing. Such a small angle is sufficient to achieve overlap at two points in each groove, which is advantageous for smooth operation of the automotive door latch. What is more convenient is that such a small angle can be easily provided without major changes to the overall design of the automotive door latch.

  Thus, in an advantageous embodiment, the claw with a seat connected to the base is formed on the base or includes an oblique contact for the claw and a normal connection to the claw. Also, this does not interfere with the work cycle, ie assembly, but with the option of a seat formed simultaneously with the base of the locking case housing for the implementation of the invention which requires certain changes in molding. Just indicate that a small change is needed.

  In other options that achieve offset or diagonal placement of the claw on the base and always achieve a uniform effect, the claw is offset and secured to the box-like coating that forms the level base at a specific angle. The Therefore, the inclination or offset arrangement of the claw is always specified, the connection to the base of the locking case housing can be left unchanged, and the plastic coating is always necessary anyway, small Only recognition is necessary.

  An option is also disclosed in which the seat portion of the catch portion or the catch portion and the seat portion of the claw portion are connected to the base of the locking case housing in an oblique state instead of the oblique position of the claw portion. The same fixing as used in the diagonal arrangement of the claw part must be used for the catch part, but in the case of the diagonal arrangement of the catch part and the claw part, a small but opposite angle is used. As described above, in particular, the seat of the catch part or the seat of the claw part is fixed or formed obliquely, so this can be easily achieved.

  A particular advantage of the present invention is that it can generate a car door latch with minimal additional manufacturing effort, where the latch area, i.e. the area where both the pawl and catch are on top or lean against each other. In the above, the claw part and the catch part are designed such that the noise level of the prior art is considerably reduced. Also, the special arrangement of the claw or catch part has the result that the existing grooves cooperate so that there is a certain point of overlap or contact, so that a uniform movement of the claw part along the catch part is guaranteed. Is done. In particular, the grooves created during stamping no longer engage each other and cause unnecessary noise. Various options are available for each diagonal or offset arrangement of the pawl or other locking mechanism components. For example, the coating can also be arranged to define the diagonal position of the claw, while at the same time the flat base of the box-like coating part ensures a light connection with the base of the locking case housing.

  Further details and advantages of the subject matter of the invention are disclosed in the following description of the respective drawings showing preferred embodiments with the necessary details and components.

FIG. 1 is a plan view of an automobile door latch in a closed state. FIG. 2 is an enlarged view of a connection portion between a base and a catch portion of the lock case housing. FIG. 3 shows another option for connecting the pawls arranged diagonally to the base. FIG. 4 shows a schematic view of the opposing latch surfaces of the catch and pawl. FIG. 5 is a perspective view of a catch part with special edge formation.

Detailed Description of the Invention

  FIG. 1 shows a plan view of an automotive door latch 1, where a catch portion 2 that moves about a shaft 3 includes a hanger arm 9 of a locking bracket 7.

  This figure therefore shows a closed automotive door latch 1 in which the catch part 2 is held by the claw part 5 so that it can pivot along the axis 6 of the claw part, in other words, once the claw When the part 5 turns away, the car door latch 1 becomes unlockable again, which is achieved by a car door handle (not shown). The hanger arm 9 is moved to the lowest point 27 of the catch portion 2 by the seat portion 4, so that the vehicle door (not shown) is closed, but the lock mechanism parts 30, 31 (ie, The claw part 5 and the catch part 2) are parts of an automobile door, and at the same time, the hanger arm 9 and the locking bracket 7 are fixed to the car body of the automobile. The locking mechanism parts 30, 31 of the locking mechanism 8 are preferably produced from each sheet metal using a plurality of stamping operations and both locking mechanism parts on the ratchet surfaces 12, 13 not covered by the coating 10. 30 and 31 surfaces are characterized by a stamped contour 14. However, in the region of the latch surface 13 this surface arrangement has been altered by the offset, or slightly rotated arrangement of the components, in particular the claw 5, whose grooves 18, 19 are stamped contours 11 Are arranged in an oblique state and are shown in FIG. 3 as obliquely arranged grooves 18 ′, 19 ′. The stamping profiles 11 and 13 generate considerably improved sliding friction between the lock mechanism parts 30 and 31, that is, the claw part 5 and the catch part 2, so that unnecessary noise no longer occurs. . What is not particularly clear from the figure is that the edges 15 and 16 of the catch portion 2 and the claw portion 5 are covered with the plastic coating 10. Thus, although the edges 15 and 16 are covered with such a coating, the area of the latch surfaces 12 and 13 and the contact surface 20 are not provided with any coating 10 and are shown in the following drawings. It allows the special surface structure shown to be effective. This surface structure reduces noise and sliding friction to a minimum, but both are related.

  FIG. 2 shows the area of the latch surface 12 on the catch part 2, which must correspond to the latch surface 13 on the pawl part 5 during opening and closing of the car door latch 1. This is because during the opening and closing of the automotive door latch, both locking mechanism parts 30, 31 are in relation to the latch surfaces 12, 13 or edges 15, 16, with each other in the region of their latch surfaces 12, 13, even at the top of each other. 2, particularly as shown in FIG. 2, in the case of a catch portion 2 having a straight groove 17, when the latch surface 13 has the same design at the claw portion 5, that is, a straight groove It also means causing problems when included as well. However, since the entire claw portion 5 is connected to the base 39 of the locking case housing 40 that is offset by a certain angle, this is not the case described above. In order to achieve this, the base 39 includes a seat 42 which projects slightly above the base 39, which is achieved by respective deformations. A support surface 43 arranged parallel to the base 39 in this case supports a box 46 representing the coating 10, where the entire claw 5 is arranged in an inclined or oblique manner, respectively. As a result, the grooves 18 and 19 of the claw portion 5 are disposed obliquely in the region of the latch surfaces 12 and 13 as indicated by reference numerals 18 ′ and 19 ′. Therefore, the disadvantageous noise and excessive friction described above can no longer occur. The seat part 42 includes a hole and allows a normal connection to be provided between the base 39 and the claw part 5.

  FIG. 3 shows an oblique arrangement of the support surface 43 of the seat 42 instead of the box 46 in which the claw 5 is arranged in an oblique state, so that the claw 5 is in an oblique position when the connecting part 44 is generated. It is in. This figure also shows that the latch surface 12 and the latch surface 13 having the linear stamping outer shape 14 and the stamping outer shape 11 arranged obliquely or obliquely can engage the grooves 17, 18, 19 with high reliability. Indicates to prevent. Both FIG. 2 and FIG. 3 show that the other locking mechanism component 31, that is, the surface 41 of the catch portion of the catch portion 2 is arranged parallel to the surface of the base 39. Although not shown in the drawing, both the claw portion 5 and the catch portion 2 are used to reliably prevent the linear groove 17 and the oblique grooves 18 and 19 from engaging at an angle that is offset from each other. Can be arranged at a certain angle.

  To clarify this situation, FIG. 4 shows how the latch surface 12 and the latch surface 13 of the catch part 2 and the claw part 5 lean against each other during the operation of the automotive door latch 1. For the sake of clarity, an angle larger than the actually required angle is shown.

  The number 25 refers to the overlapping points 25, 25 ', and the region 37 of the catch portion 2 faces the claw portion 5 and is indicated by a dotted line, indicating that the stamping profile is not a straight line.

  FIG. 1 displays the longitudinal axis 38 of the claw 5 and the reference symbol 26 ′. Each of the claw portions 5 is pivoted about the longitudinal axis and connected to the base 39 of the locking case housing 40.

  FIG. 5 shows a perspective view of the catch portion 2 that is not shown in the figure, but that can pivot about the shaft 3. When the catch part 2 is turned, the hanger arm 9 (not shown in FIG. 5) is inserted into the seat part 4 and later released again, so that the automobile door can be opened and closed uniformly thereafter. In the locked position, the catch portion 2 is held by the claw portion 5. FIG. 5 shows that the stamping of the catch 2 produces a clearly visible edge 15 whose surface is characterized by a contour 14 stamped on the latch surface 12 as described above. This stamped outline 14 is displayed only in FIG. The latch surface 12 displays the main ratchet position 22, i.e. the position where the pawl 5 prevents the catch 2 from pivoting back in the closed position. As described above, since the linear groove 17 of the catch portion 2 and the oblique grooves 18 ′ and 19 ′ of the claw portion 5 cannot be engaged or interlocked, the latch surface 13 of the claw portion is then moved to the catch portion 2. Both of them can lean against the latching surface 12 and both can slide past each other with little friction without generating unnecessary noise.

  It is clear that the lowest point 27 of the seat 4 includes a different surface than the edge 15, which is achieved in particular by not including the coating 10. This figure shows that another part has also been inserted at this point in order to improve the sliding effect of the catch 2 on the hanger arm 9.

  All of the features described above, including the features shown only in the drawings, are an essential part of the present invention, either separately or in combination.

Claims (12)

In a method of manufacturing an automotive door latch with a locking mechanism component, a catch portion and a claw portion, the catch portion and the claw portion are stamped, and at the catch portion and the claw portion, a vertical or The method, wherein the edges are substantially vertical edges, which are then covered by a coating except for the latch surface,
The catch portion having a linear stamping profile is attached to a base of a locking case housing, the latch surface is disposed parallel to the base, and the claw portion is rotated at a certain angle, A method, characterized in that it is connected to the base of a locking case housing.   The claw portion is offset at an angle of 5 to 8 °, and is pivotally fixed to the base of the locking case housing. The angle is about 4 mm thick, and the groove interval is 0.15 to 0.30 mm. The method according to claim 1, wherein the method is applied to a claw portion and constitutes a stamped outline of the catch portion and the claw portion.   The method according to claim 1, wherein the base of the locking case housing includes a seat for the claw disposed obliquely on the base.   The conventional connection of the claw portion is used, wherein the seat portion of the claw portion is connected to the seat portion of the locking case housing by a seat portion including an oblique support surface. The method as described in any one of 1-3.   The said claw part is hold | maintained diagonally by plastic coating, is located in the said base of the said case housing for a lock | rock, and is connected to the said housing, It is characterized by the above-mentioned. The method described.   The coating is a rectangular plastic body, and within the plastic body, the claw is required to obtain an oblique stamping profile on the latch surface relative to the linear stamping profile on the catch latch surface. The method according to claim 5, wherein the method is held at the same time as being offset at a certain angle.   The seat part of the catch part or the claw part and the seat part of the catch part are offset from each other and connected to the base of the locking case housing. The method as described in any one of. In the automotive door latch including the catch portion (2) and the claw portion (5) that holds the catch portion (2) in the closed state, the catch portion (2) and the claw portion (5) are perpendicular to each other. At the edges (15, 16), including corresponding latching surfaces (12, 13), which are produced in the stamp, together with the coating (10) excluding the latching surfaces (12, 13), ,
The catch portion (2) is disposed on the base (39) of the locking case housing (40) having a latch surface (41) parallel to the base (39), and the claw portion (5) , Turned by a specific angle (26 ′) to prevent engagement of the stamped profile (11, 14) of both locking mechanism components (30, 31), and the base of the locking case housing (40) A latch for an automobile door, characterized by being connected to the door.   9. Latch for motor vehicle door according to claim 8, characterized in that the claw part (5) is rotated by 5-8 [deg.] And is arranged on the base (39) of the locking case housing (40).   The claw portion (5) is formed obliquely on the base (39) by the seat portion (42) providing the connection portion to the base (39), and the arrangement is the normal connection with the claw portion (5). 9. A door latch according to claim 8, characterized in that it includes an oblique support surface (43) for (44).   11. The claw (5) is fixed to a box-like coating (10), forms a flat base and is offset by a specific angle (26 '). A latch for an automobile door as described in 1.   The seat portion of the catch portion (2) or the seat portion of the catch (2) and the claw portion (5) is connected to the base of the locking case housing (40) and is arranged obliquely. The latch for motor vehicle doors as described in any one of Claims 1-11.

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